Combined plug and wrench



Oct. 29, 1929. A L MAYS ET AL 1,733,690

COMBINED PLUG AND WRENCH Filed March l. 1928 ALFRED L. Mns/56 WMM/J5 I? CRUMEE,

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A TTORNE Y.

Patented Oct. 29, 1929 ,PATENT- OFFICE Tseiiasrr dimmen, F rLoRENcE, SQUTH CAROLINA comrnnnrnne Ann.intimenv l Application. med. March, 1, i923.v serial. No. 258,381.

.1:15 turnedby an ordinaryywrench, or ijf-turned,

the. Workisvery laborious and time consuming.

In accordance with our invention, We ,pro-

vide a plug which is permanently connected 120 Witha ratchet wrench, 'having-a long. handle,

for providing proper'leverage to turn the plug; -TheQconstruction-.ofathe wrench element is such that theplug. may be turned, when placed in positions, upon the lOGOIIlOtVB,

- .25 whereit would be ordinarilydiieu-lt toturn the same, bymeans .ofI the. usual wrench.

Inl the accompanyingy drawings forming a part. of this specification, and'in which like numerals are-employedto .designatelike 1parts r im throughout thersame,

'Figure 1 is a longitud-inalvsection through a grease cup of a locomotive,

Figure-2 is a side elevatiouofa. combined plug and ratchet Wrench, parts in section, "85 Figure3 is aplan view of the device, the

handle'being removed. from the ratchet element,

Figure 4 is a longitudinal section taken on line 4--4 of Figure 2, and,

Figure 5 is a transverse section taken on line 5-5 of Figure 2.

In the drawings, wherein for the purpose of illustration, is shown a preferred embodlment of our invention, the numeral designates V4&5 a bearing of a railway locomotive, receiving grease from a port 11, leading to a grease cup 12. This grease cup is provided with the usual cap 13, having a square recess 14, in its top, to turn the same.

Our combined plug and ratchet wrench emly withv relationl to the same.

bodies a plug 15, which is screw-threaded, for engagement with the internal screw-threads '16, ofthe greasecup 12. This plug 15 is providedatits outer-end with a cylindrical p0r- 'tion17 and a polygonalportion 18, these parts 55 .being formed integral. The polygonalportionis smaller than the cylindrical portion 17, aordingy a Shoulder 19. Formed integral With the polygonal port-ion 18 is a Cylindrical shank 20, of smaller diameter, than the .polygonal portion 18 affording a shoulder 21.

Theshank 2O isprovided at its base with a screw-threadedy portion 22, having a slightly larger diameter than the major portion of the length of the shank 20. At its outer end, the shank 20,'has a square portion 23, adapted to be inserted within the recess 14, of t-he cap 13.

- APerma nentiy, attachedutothe plug 15 is a ypawl and ratchet wrench, embodying a ratchet This ratchet de- 7.0

device 24, and a handle 2,5. vice/,embodies a rotatable casing or housing 26, having one side open andv provided with internal. screw-threads 27.' .The oppositeside of the housing 26 yis closediby a head 28, having a cylindrical opening 29, to rotatably rec eive the cylindrical portion 17. The numeral 3 0 A4designates a head orend to close the open side;Qfthehousing26,and having a circular opening 31to receive .the'cylindrical shank 2,0. .The headv 30I has its periphery screwso threaded, r:it/32, for engagement with the screw-threads 27.

The-numeral 33 designates a ratchet or toothed wheel, havinganopening 34, which is polygonal, to receive the npolygonal portion 18., The ratchet wheel isgheld in place by engagementbetween the shoulder` 19, and a ring nut 35, engaging the screw-threads 22, andiittng Within a recess 36, in the head 30.

Itis thus seen that the vtoothed wheel 33 is.9.0

,connectedfwith the plug 15, for rotation therewith, andisincapable of moving longitudinal- The housing 26 spermanently -rptatebly Connected With the plug115 and rotates about the toothedwheel. 95

Formed integral with the housing 26, and

. extending radially thereof, is a sleeve 37, within which is mounted to slide aipawhorfdog 3.8 having a tooth' 39, to :engage'with the teeth of theWlfieelY The-10535.15 rigidly ccn- 10o section.

nected with a shank slidably mounted within a bushing 41, which is screwed into the outer end of the sleeve 37. A spring'42 surrounds the shank 40 and forces the dog 38 inwardly. The shank 40 is provided at its outer end with a button 43, whereby the shank may be shifted longitudinally and turned upon lts longitudinal axis, yso that the tooth 39 may be reversed, for effecting the rotation or" the wheel 30 in opposite directions.

The lhan'ille 25 is laterally offset and the long portion 44 is provided with-a transverse portion 45, which is provided at its free end with a socket 46, square in cross'section, to receive the sleeve 37, which is square in cross The socket 46 Vhas a reducedV opening 47, affording a shoulder 48, and the shank V40 extends through the'opening 4 7, so -that the button 48 mayV be manipulated'without the necessity of removing the Vsocket 46 from the sleeve '37. The handle '25 isV provided at its outer end with a squarefportion 44', which may be inserted within the recess 14 of the capl.

The shank 20 is provided with a transverse opening 49, receiving aradial handle 50, provided at its ends with the usual knobs 51.-

In the use of the combined plug andlwrench, the cap 13 is removed fromthe greasel cup, and the plug 15 screwed into the outer'end of the grease cup. The handle-,25f-lnay be separated from the ratchet device '24, `and the initial turning-or screwing in of the plug 15 may be reffected bythe handle" 50. When increased resistance is applied to the v movement of the plug 15, by the grease, the

handle 25 has its socket 46 applied to the sleeve 37 ,and the handle is swung back 'and forth to cause thedog 88 to effect a step-bystep turning movement of the wheel 33, which turns the plug 15, to screw the same into the grease cup. The handle 25 may ybeof vany suitable length to providethe required leverage` to turn the plug 15.r To unscr'ew the plug, Vthe handle -25 may remain upon the sleeve 37 and-'the button 43 manipulated'to reverse the pawl or dog 39 so that the ratchet wheelv 33 may turn 'in a reverse direction. The ol'set arrangement of the handle renders it possible or the handle to'be employed in turning the plug, when the plug is locked in positions which would be; otherwise inaccessible.

l It is to be understood that ythe form of our invention, herewith shown and described, is

to be taken as a preferred example of the same, and that various'changes in theshape, size and arrangement of yparts may be resorted to without" departing rOm'the'spirit of our invention or the scope of the subjoined 1' l claims.

vice carried by the plug, and a lever detachably connected with said device.

2. The combination with a screw-threaded grease cup plug, of a pawl and ratchet device permanently attached to the plug, a shank secured to the pawl to reverse it, a lever having a socket to engage with apart of said device, said socket having an openin through which the shank extends, said lever eing latv erally offset.

3; A lubricating device 'comprising'a grease cup, `a screwthreaded plug for operation within the grease cup, a toothed wheel rigiidlymounted upon vrthe plug, a housing rotatably mounted upon the plug and receiving the toothed nwheel,'a sleeve rigidly'mounted upon the housing and extending radially therefrom,fa spring-pressed dog mounted within thel sleeve and engaging the, toothed wheel and embodying. a shank extending ra- .85 i Y dially beyond-'the sleeve, and a handle having a'socket arranged at an angle thereto,the bore of the socket extending through' .its inner and outer ends, a socket being adapted 'to be detachably mounted upon said sleeve and ego said shank extending through and beyond the outer 'end of thebore whereby it is accessible.

4. A lubricating device comprising a grease cup, a yscrew-threaded plug operating therein, a shank secured to the outer end of the 295 plug, a toothed wheel rigidly mounted upon the inner end of the shank with the shank lextending voutwardly beyond .the toothed 4wheel fora substantial distance, a` housing rotatably mounted about the toothed wheelaoo v aI-radial sleeve kcarried lby the housing, a spring-pressed dog mounted within the s leeve to engagel with the toothed wheel and embodying a radially extending shank, a lever having va socket arranged at an angle there-55105 to, saidsocket having the oppositeends of lits bore open, 'said socket detachably receiving :thelsleeve andthe radial shankextending through and beyond the `bore so that. it may be readily accessible, andseparate meansetuo to turn the shank carried by the outer end of the plug. v

l f Inl ,testimonyr whereof we afiix our signaturesfvf. y A v f ALFREDLMAYS e115 'THOMAS P. CROMER.V

Havingthusdescribed-'our invention, we

claim l. The combination with a screw-threaded grease cup plug, of a pawl and ratchet de- 

